Barkham, M., Bewick, B., Mullin, T., Gilbody, S., Connell, J., Cahill, J., Mellor-Clark, J., Richards, S., Unsworth, G. and Evans, C. (2013). The CORE-10: A short measure of psychological distress for routine use in the psychological therapies. Counselling and Psychotherapy Research, 13, 3–13.
Barkham, M., Gilbert, N., Connell, J., Marshall, C. and Twigg, E. (2005). Suitability and utility of the CORE-OM and CORE-A for assessing severity of presenting problems in psychological therapy services based in primary and secondary care settings. British Journal of Psychiatry, 186, 239–246.
Barkham, M., Mellor-Clark, J., Connell, J. and Cahill, J. (2006). A core approach to practice-based evidence: A brief history of the origins and applications of the CORE-OM and CORE system. Counselling and Psychotherapy Research, 6, 3–15.
Carlier, I. V. E., Meuldijk, D., Van Vliet, I. M., Van Fenema, E., Van der Wee, N. J. A. and Zitman, F. G. (2012). Routine outcome monitoring and feedback on physical or mental health status: evidence and theory. Journal of Evaluation in Clinical Practice, 18, 104–110. doi:10.1111/j.1365-2753.2010.01543.x
Crits-Christoph, P., Ring-Kurtz, S., Hamilton, J. L., Lambert, M. J., Gallop, R., McClure, B., Kulaga, A. and Rotrosen, J. (2012). A preliminary study of the effects of individual patient-level feedback in outpatient substance abuse treatment programs. Journal of Substance Abuse Treatment, 42, 301–309.
Davidson, K., Perry, A. and Bell, L. (2015). Would continuous feedback of patient's clinical outcomes to practitioners improve NHS psychological therapy services? Critical analysis and assessment of quality of existing studies. Psychology and Psychotherapy: Theory, Research and Practice, 88, 21–37. doi: 10.1111/papt.12032
de Jong, K., van Sluis, P., Nugter, M. A., Heiser, W. J. and Spinhoven, P. (2012). Understanding the differential impact of outcome monitoring: Therapist variables that moderate feedback effects in a randomized clinical trial. Psychotherapy Research, 22, 464–474.
Guy, W. (1976) Clinical Global Impressions. In ECDEU Assessment Manual for Psychopharmacology, revised (DHEW Publ. No. ADM 76-338), pp. 218‒222. National Institute of Mental Health: Rockville, MD.
Hannan, C., Lambert, M. J., Harmon, C., Nielson, S. L., Smart, D. W., Shimokawa, K. and Sutton, S. W. (2005). A lab test and algorithms for identifying clients at risk of treatment failure. Journal of Clinical Psychology, 61, 155–163.
Harmon, S. C., Lambert, M. J., Smart, D. M., Hawkins, E., Nielsen, S. L., Slade, K. and Lutz, W. (2007). Enhancing outcome for potential treatment failures: Therapist-client feedback and clinical support tools. Psychotherapy Research, 17, 379–392.
Kendrick, T., El-Gohary, M., Stuart, B., Gilbody, S., Churchill, R., Aiken, L., Bhattacharya, A., Gimson, A., Brütt, A. L., de Jong, K. and Moore, M. (2016). Routine use of patient reported outcome measures (PROMs) for improving treatment of common mental health disorders in adults. Cochrane Database of Systematic Reviews, 7, CD011119. doi: 10.1002/14651858.CD011119.pub2
Knaup, C., Koesters, M., Schoefer, D., Becker, T. and Puschner, B. (2009). Effect of feedback of treatment outcome in specialist mental healthcare: Meta-analysis. British Journal of Psychiatry, 195, 15–22.
Kraus, D. R., Castonguay, L., Boswell, J. F., Nordberg, S. S. and Hayes, J. A. (2011). Therapist effectiveness: implications for accountability and client care. Psychotherapy Research, 21, 267‒276.
Lambert, M. J. and Shimokawa, K. (2011). Collecting client feedback. Psychotherapy, 48, 72‒79.
Lambert, M. J., Whipple, J. L., Smart, D. W., Vermeersch, D. A. and Nielsen, S. L. (2001). The effects of providing therapists with feedback on patient progress during psychotherapy: Are outcomes enhanced?
Psychotherapy Research, 11, 49–68.
Lambert, M. J., Whipple, J. L., Bishop, M. J., Vermeersch, D. A., Gray, G. V. and Finch, A. E. (2002). Comparison of empirically derived and rationally derived methods for identifying patients at risk for treatment failure. Clinical Psychology and Psychotherapy, 9, 149–164.
Lyons Reardon, M., Cukrowicz, K. C., Reeves, M. D. and Joiner, T. E. (2002). Duration and regularity of therapy attendance as predictors of treatment outcome in an adult outpatient population. Psychotherapy Research, 12, 273–285.
Macdonald, J. and Mellor-Clark, J. (2014). Correcting psychotherapists’ blindsidedness: formal feedback as a means of overcoming the natural limitations of therapists. Clinical Psychology and Psychotherapy, 22, 249–257. doi: 10.1002/cpp.1887
Mellor-Clark, J., Barkham, M., Connell, J. and Evans, C. (2000). Practice-based evidence and need for a standardised evaluation system: Informing the design of the CORE System. European Journal of Psychotherapy, Counselling and Health, 2, 357–374.
Mellor-Clark, J., Connell, J., Barkham, M. and Cummins, P. (2001). Counselling outcomes in primary health care: a CORE system data profile. European Journal of Psychotherapy and Counselling, 4, 65–86.
Shimokawa, K., Lambert, M., and Smart, D. (2010). Enhancing treatment outcome of patients at risk of treatment failure: Meta-analytic and mega-analytic review of psychotherapy quality assurance system. Journal of Consulting and Clinical Psychology, 78, 298–311.
Simon, W., Lambert, M. J., Busath, G., Vazquez, A., Berkeljon, A., Hyer, K.
et al. (2013). Effects of providing patient progress feedback and clinical support tools to psychotherapists in an inpatient eating disorders treatment program: A randomized controlled study. Psychotherapy Research, 23, 287–300.
Simon, W., Lambert, M. J., Harris, M. W., Busath, G. and Vazquez, A. (2012). Providing patient progress information and clinical support tools to therapists: Effects on patients at risk of treatment failure. Psychotherapy Research, 22, 638–647.
Slade, K., Lambert, M. J., Harmon, S. C., Smart, D. W. and Bailey, R. (2008). Improving psychotherapy outcome: The use of immediate electronic feedback and revised clinical support tools. Clinical Psychology and Psychotherapy, 15, 287–303.
Walfish, S., McAlister, B., O'Donnell, P. and Lambert, M. J. (2012). An investigation of self-assessment bias in mental health providers. Psychological Reports, 110, 639–644.
Whipple, J. L., Lambert, M. J., Vermeersch, D. A., Smart, D. W., Nielsen, S. L. and Hawkins, E. J. (2003). Improving the effects of psychotherapy: The use of early identification of treatment and problem-solving strategies in routine practice. Journal of Counselling Psychology, 50, 59–68.